Bug ID 797589: Non zero 'int_dropped_bytes' counter when there are 0 int drops

Last Modified: Apr 28, 2025

Affected Product(s):
BIG-IP AFM(all modules)

Fixed In:
15.1.0

Opened: Jun 25, 2019

Severity: 3-Major

Symptoms

int_dropped_bytes are showing random value even there are no hw drops (int drops)

Impact

There will be wrong stats counter values for hardware-related drops.

Conditions

Config for UDP flood vector with detect, mitigation and detection percentage values and send the attack. Running the following command and looking at the int_drops metric tmctl -w 450 dos_stat | grep -E 'UDP flood|name'

Workaround

None

Fix Information

Adjusted the bitfield files to correct values such that int drop bytes are 0.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips